Table 3 Comparison of demographics of the Statistics Netherlands (CBS), web and telephone sample
| Â | CBS sample (n = 4,133) | Web sample (n = 1,668) | Telephone sample (n = 404) | Significance tests | |
|---|---|---|---|---|---|
| Â | Â | Â | Â | CBS versus web | CBS versus telephone |
Gender (%) |  |  |  | χ2 = 0.16 | χ2 = 1.30 |
Men | 54.2 | 52.6 | 55.3 | (df = 1) | (df = 1) |
Women | 45.8 | 47.4 | 44.7 | Â | Â |
Marital status (%) |  |  |  | χ2 = 104.68*** | χ2 = 32.82*** |
Not married | 33.1 | 44.2 | 43.6 | (df = 3) | (df = 3) |
Married | 50.2 | 47.7 | 48.3 | Â | Â |
Widowed | 5.1 | 2.0 | 4.2 | Â | Â |
Divorced | 11.7 | 6.1 | 3.9 | Â | Â |
Educational level (%) |  |  |  | χ2 = 20.14*** | χ2 = 95.34*** |
Low | 46.5 | 50.8 | 35.0 | (df = 3) | (df = 3) |
Middle | 36.7 | 35.1 | 47.4 | Â | Â |
High | 16.6 | 13.3 | 13.9 | Â | Â |
No answer | 0.3 | 0.8 | 3.7 | Â | Â |